This is a custom size of the Improv Zip Wristlet and it fits a large Moleskine journal (5.25" x 8.25"). It turned out amazing in this fabric called Thistle from the Flower Shop collection (Cotton + Steel). The inside is a patchwork of black and white/cream prints.
The last page of the text instructions for the Improv Zip Wristlet shows how to make this in custom sizes. Here are the measurements I used for this one:
- 10.25" wide (26cm)
- 7.5" high (19cm)
- C is at 1.75" (44mm)
- A is at 1.5" (38mm)
- box bottom 0.75" (19mm)